Valve.



E. E. MCCOLLUM.

VALVE.

APPLICATION FILED JULY 2|. Lela.

1,179,120. l Patented pr. 11, 1916.

m1911161 Apr. 11, 1916.

-s SHEETS-SHEET 2.

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mslm

VALVE.

Patented Apr. 11, 1916.

' '3.sHEETs-SHEET 3.

' E. E. MccoLLUM.

APPLICATION FILED JULY 2l. I9I5. 1,179,120.

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.f II .MII I 1I w. iur I UNITED STATES PATENT onirica. i

EARL E. MecoLLUM,I or :DoWNEns GROVE, ILLINOIS.

. VALVE Original application filed April 5, 1915, Serial No. 19,285.

Specification of Letters Patent.

Patented Apr. 11,v 1916.

Divided and this application filed-'July 21, 191,5.

Serial N0. 41,054. l

' a citizen of the United States, residing at Downers Grove, in the county 'of Dupage and State of Illinois, have invented certainnew and useful Improvements in Valves, of

which the following'is a specification.

My invention relates .to improvements in l valvesand 'more particularly to valves'for cally equalized'under varying temperatures;

internal combustion. engines.

A particular object of my invention is to Aprovidea rotary valve, such as will automatically'care for any wear. that may be occasioned by continued usage.

lAnother object ofmy invention is to provide such a rotary'valve as will lbe practiso as to prevent seizure ordiiiiculties in luciation with' a valvefope'rating'means illustrated and described in my copending appli' brication due to unequal expansion.

Another object of my invention is to provide a valveparticularly adapted. for assocation Serially Numbered 19,285 entitled Valve and valve'motin, filed April 5th, 1915, of which the present -application is al division.

' Other and further objectsof my invention will become readilyapparent, to persons lskilled in the art, from a consideration-of' the following description when taken in conjunction with the drawings,v wherein:

.Figure 1 is a vertical, central section of an engine providedwith one embodiment of. Ymy invention. Fig. 2 is a fragmentary section taken on line 2-2 of Fig. 1. Fig. 3 is a section taken on 'line 3&3 of Fig. 1. Fig.

-4 is a'central vertical section of the valve,

valve casingjand means for rotatingv the valve showing the intake port closedA by the valve. Fig.- 5 is a transverse section taken v online 5-5 of Fig; 4. Fig. 6 is a transverse section taken 'on line .6 6 of Fig. 4. F 1g..7 i is. an elevation, part 1n section, of an internally toothed, valve-moving sleeve,- for rotating the valve. Fig. 8 is a transversesection, taken on line 8-8 -of Fig.A 4.- Fig. 9.is a view similar to Fig. 4 'showing the intake port open. F ig. 10 is a perspective view of the valve.

In all the views the same reference charcters are employed' toI indicate similar parts.

I have shown my invention in connection With an internal combustion engine of the 55 usual type, wherein'l is vthe crank casing, 16 is the 'crank,- 1 Zfthe'wrist pin, 18, the' main driving shaft, `19 the cylinder, 20 the reciprocating piston therein, and 21 the pin by which the connecting rod 22 is connected 60 to the piston. The otherend of the connecting rod being connected. to the wrist pin, as

at 213. 24 is a water jacket around the combustion chamber 25. Thesel features rare typical of engines of this character. 'a 65 The cylinder head 26 is' perforated, as at l27', and to the upper end of the cylinder is 'i connected a valve casing 28, as by bolts 29. Properly connected to the .valve casing 28 is an-intake pipe '30 and an exhaust pipe-31. .7o

*The valve casing 28 yis provided with an outer tapered wall 32 and an inner tapered wall 33 providing a tapered'valve space 34 for the tapered annular valve 35. In this Y particular embodiment the valve 35 4is pro- 75 vided`with a single port 36` adapted to regis'- terwith the intake ports 37v and`38 'madehin `the inner and outer walls 33 and 32, respece. tively, and with a similar exhaust port- 37 and,39. A cap40, is'screw. threaded to cover 80 y the.top of the casing 2 8, as at 41, and is cen'- trally perforated. and screw threaded 4for engagement of a closed 'tube-*42. Adjusting' screws 43, pass through the top of the cap.

40, and bear upon the top wall 35f of the'85..

valve 35. intended toprevent the valve 35 from being These adjusting screws 43 are `46 which 'are continuous from end to end of said tube. In the present exemplification, tube is made to turn with the valve 35 by, means of the feather 47 which engages in the v100 feather-way 48 of the valve, when the two parts occupy'their proper relative positions.

The lower end of the tube 45 restsinthe ring 45 which is secured to the cylinder head 28- by the integral ribs 49-.49 leavingspaces 105 50-50 on either side thereof through which the motive fluids and the products of combustionmay freely pass to and through the to bridge the joint between wsaid tube and the upper surface'ofthe piston head 20'.- Se- .10

when the tube 45 is rotated, the valve 35 is rotated thereby.

Rotatively and centrally fixed to the piston head is avertically extending tube 51, provided with a shoulder 52 near its lower end within which is a packing ring 53,

curedto `or made as an integral part of the of the' tube 51 are a series of spaced apart circumferentially extending series of teeth- 55, intermediate the ends ofv saidtube, and more clearly shown' in Figs. 4 and 8. Thesevteeth are adapted to ,enterr the interdentalA spaces 56-56 0f the tube 45, as.v shown 'in Fig. 9. Inside of the tube 51 1s another smaller tube 57 'which' is. freely-rotatable therein and which projects beyond each end of the larger tube. Secured to orl integral with the lower end,of the tube 57 is a segment of a gear 58, and to the upperlend of the tube 57 is secured a pinion 5 9, shown -in cross section in Fig. 8, having teeth which are also adapted to enter' ,the interdental spaces 56-56 `of the valve tube 45k between the teeth 46 that are located within the in terior of said tube.' The upper end of the rod 57 is reduced and isA provided with a screw vthreaded end 60 anda shoulder 61,

against which'the pinion 59 is held by a nut 62, that vengages the end 60 of the rod 57. A pin 63 may be employed to secure the pinion-59 in place. l'

The-upper and of the pitman or connecting-rod 22 carrles a geared segment 64 which coperates with` a geared segment 54 4that is secured to the lower' end of the outer tube 51. The connecting rod ispalso providedv with a geared segment 65 which coperates with a geared segment -58 that 1s conment 65 with thesegmen't 58 so that the inner and outer tubes 51 and 57 will be oscillated by the oscillatory motion of the connecting rod 22l at' approximately the same rate of-speed. The tubes 51 and A57 are oscillated by. the geared mechanism just described butthe rate of speed will be propor-V tional to the cosine of the crank angle or in.

versel'y to the sine of the crank angle.

When the crank or wrist pin is passingv through a quadrant of its motion, usually indicated as the deadcenter, or when it is f passing from apoint taken at one side of and 57 will be rotated at their liighest vea vertical plane through the shaft 17, un'- tilit reaches substantially the same'point on the opposite side thereof, the tubes 51 locities and when the crank pin is passing through the next quadrant of its motion,

thatis to say, when it is substantially aspin is passing through this quadrant of its" motion thetubes 51 and 57- are practically stationary. f I

vWhen the crank pin v17' is ascending, vas

4shown in ,Fig. 1,y the tubes 51 and 57, to' lower end of the tube 51, is a `segmental gear'54. Secured to or constructed as a part gether with the piston 2O are" being elevated, or. ralsed, and the teeth 55 of the tube 51 are about to enter the interdental space 56 of the valve tube 45. Just about'fthe'time or through the upper quadrant of its motion, the teeth 550i?4 the tube 51 have made connection with the valve tube and the segment .,64 carried by the connecting rod 22 begins to rotate the segment 54 carried by the same-time the segment' the tube 51.v 65' rotates the pinion 58 carried by the inner tube 57, in the opposite direction, but inasmuch as the pinion 59,"which is con nected to the inner tube, is not now connected with the-valve, the inneritube '57 is lrotated idly. -During the movement of the pin 17 throughv thequadrant of` its motion, if the valvev35 has been rotated, through the connectionsl described, 'so that the port 36 registers with the intake port 38, at the time when the pin`17 is at the end of. the upper quadrant-of its motion, the valve will now remain' ,open and substantially immovable until the pin'17 has finished the nextA succeeding quadrant of its motion, or while it is descending. When-the pin 17 arrives at approximately. the horizontal plane it is shown to be in Fig. 1, but on the o-pposite side of the shaft 18, the teeth 55 on the' sleeve 51 willvoccupy substantially the disengaged position sho'wn in Fig. 1' and the pinion 59 on the tube 57, will have made engagement with the teeth 46 of the valve tube 45 and now as the crank pin 17 passes through the Vlower quadrant ,v of its motion, or from the'right to the left hand side, the segment 65, which rotates the segment 58 of the tube 57, will be rapidly rotated and move the valve to close the valve port 38, after` which the piston 20 will start on its compression stroke. cycles of the motion of the piston the valve will remain closed, because there are no ports through the casing 28 with which vthe valve 36 may register during the compres-A sion and power stroke of the piston. At

the end of the power stroke, however, the

valve port 36 will havearrived opposite the exhaust port 39, as shown in Fig. 5, andthe next` succeeding stroke of vthe piston will During the next two serve to scavenge the cylinder throughl the.

exhaust port and thus the vfour cycles .of the engine have been completed. j

I have placed a funnel 68 lat the lower end of Ythe tube 57 so that the 'movement of oil due to the splash of the crank in tli'e casing may cause it to pass up throughthe inte-` rior of the tube 57,'and lubricate the valve and connecting`-parts. Of course, other means `may fb'e" ernployed'for lubricating these parten as for instancean oil cup or other similar device may be lplaced upon the .upper end of the closed tube 42. `I havel perforated the upper Wall of'the valve closure, it is manifest thatichanges inthe forme and disposition. of thegparts may bemade Within the scopel of-l the-'appended l ally through said-'head and piston for-.con-

nection with theconnecting rod. '4 Intestimony Whereoflhereunto set my claims.

v'Havingdescribed my invention, What-I* of spaced apart stationary annular ported Walls and havinga perforatedba-se'portion 1. A valve structure comprising a pairnesses.

Walls-,- an annular ported'valve member trof' V tatable i'nthe'spa between said stationary valve 'structure and acap carried. outer stationary 'Wall vextending vover 4thev top Voli' the valve structure.

2. The combination with the'cylinder of. an internal combustlon engine, of 'a valvel `structure comprising an-annular 4valve m`em- .vial

ber 'having aV base portion extending raf,

dially inwardly therefromand exposed'. to

the pressures Within the cylinder, means axially-.positioned for rotating said valve struc.

ture', said base portionhaving perforations therethrough, and a :Walloverlyingthe' enter-side thereoff l l h A 3. The combination with a cylinder, apis- Vton and connecting rodof an internal combustion engine, of .a *valve structure comprising a removable cylinder vhead having a ."chamb'er comr'nuni'cating .With- 'the space;

Within the cylinder, a ,rotary valvel carried by-and positioned 'entirely Within Vsaid head, ,y

and valve operating-means extending axihand in the presenceof two subscribing vvitthe presence 7 g MARY Ff'. ALLEN,' STANLEY, IW; COOK.

'fen-RL E', MecoLLUM. j 

